Gas pilot and burner



June 9,- 1931. I. M. AUSTIN, JR

GAS PILOT AND BURNER Filed March 23. 1929 Patented June 9, 1931 V I UNITED sures ems e IRVING M. AUSTIN, JR., OF BYE, .NEW YORK GAS PILOT AND B'UBNER Application filed March 23, 1929. Serial No. 349,346.

This invention relates to gas pilot and, in vention to provide a pilot construction for particular, to gas pilots used in connection gas plates which is so constructed and lo with gas bi'irners whereby the burner is ig- "cated as will efiiectively prevent the escape nited without the loss of gas in the open air. of unconsumed, gas at any time, either dur A further object of my invention includes ing the operation ofthe burner, or before the 5 a pilot construction which is simple and cheap gas is turned on: fully. The pilot, moreover, of manufacture,efiicient in operation to guard is operated from the common gas fixture against accidental escape of unignited gas, which supplies the gas to the burner and to and which will always be in position to o'perthe pilot thereby facilitating operation and 1 ate for igniting gas whenever gas is supgreatly reducingthe accidental dangers of lied to the burner in varying quantities. applying a pilot flame to a gas burner at the I A further object includes the provision of wrong moment so as to flare back or not igby-pass means in the gas supply and regu' nite the gas burner at] all. It will be noted lating fixture whereby the pilot is maintained tnat the relation of the pilot to the'burner 15 at low pressure when the gas regulating cock and the mechanism for turning on the gas is turned off, but said pilot is supplied with to the burner is such that at no time will additional gas when the gas regulating cock there be any opportunity for unconsumed is turned on to supply gas to the burner. gas to escape from the burner. This is by The location of the pilot construction is reason of theposition of the pilot, its spe- I 20 such as to be in close proximity with'the. gas cific construction and its inter-relation beburner plate so as to apply the pilot flame tween the gas regulating feed for the burner, over the burner plate at the time or, im'meand the gas regulating teed tor'the pilot, all diately before the plate is supplied with a as will appear more fully hereinafter. flow of gas. The pilot housing, or shield, is 7 Referring now to the drawing in which is 25 of specific construction so as to supply a Bunshown a specific form of construction with-- sen burner effect to the pilot and protect the out therehyintending to limit said construcpilot flame against accidental extinguishing tion to the exact showing, the usual gas as will be more fully set forth hereinafter. burner 10 is'supplied with the conducting Other objects will appear hereinafte a tube 11 and flared end 12 "for providing pas- 30 I obtain these objects by the construction i lsage and mixing space for the gas and air as N lustrated in the accompanying dra ing 111 is well known in the art. This construction which V is supplied with a gas cock or gas-fixture 13 Figure 1 is a plan view of a gas burner connected directly into the gas supplying a with a pilot of my improved construction; ipe, 14. The relation of these parts is of 35 Fig. 2 is a side View thereof partly in sec the known construction. I

tion; I The gas fixture, or cock, 13', however, is so 3 133 horizontal Section of the g constructed as to provide means whereby a and p l cvonnaftlon and PZ the g pilot flame is constantly present in the pilot *0 regulating P closeflrosltlon; housing which flame becomes active at the. 4 1s aivertlcal .Sectlon of the gas i proper moment when gas is supplied to the pilot connection showing the gas regulating human v fig Partly 1n zl f H fi t One form of construction for accomplishh g fi i S li i l gg. ing the aforesaid objects in this respect res own In S Owmg b sides in the provisionot a pilot pipe 15 of plug 1n intermedlate position, and d Shape so as to {m suitable dimenslons an f th t' l Flg 6 1s a sectlonal new 0 8 1p em vide means for conduct ng asupply ot gas fth '1 t O Lili g gtgh f reference refer t th to the pilot n the pilot housing or shield 19. same parts throughout the several views' The pilot plpe is fitted into the fixture in a It is among the prime 0 bjects of my inpilot bore 17 of suitable diameter and is held 400 in position by any suitable means such as a nut 16.

The pilot housing or shield located at the pilot end of pipe comprises an enlarged substantially pear-shaped construction having an opening at the bottom thereof and being provided with a pilot mouth 21 opposite the pilot plug 18. The mouth itself is protected by an overhanging shield 22 whereby the pilot flame is protected against accidents which might cause the flame to be blown out, or otherwise extinguished by steam or water from a cooking vessel when theburner is used.

It will be noted that the pilot housing 19 and the pilot flame itself will occupy the housing under normal conditions, that is, when the pilot is supplied with a. minimum of gas. At the instant, however, when the gas supply is increased the pilot flame will shoot out of the mouth and across the face of the gas plate to ignite the gas the moment that it issupplied. This supply is accom plished in the following manner.

The gas fixture 13 is provided with a gas regulating plug 28 of standard construction having a handle 24. Said plug is provided with a bore 25 of suitable diameter and so positioned that it will control the pilot bore 17 of the gas fixture and also the bore 26. It will be noted that the diameters of bores 25 and 26 are substantially equal and that the location of the pilot bore 17 is such as to be open to gas pressure as the pilot regulating plug is turned into open position to feed gas to the burner. The closed position of the fixture is shown in Fig. 3 and its intermediate position in Fig. 5. This arrange ment provides for an igniting flame in the pilot which is always in proper position over the burner at the instant when gas is supplied to the burner. It will be noted by this nsoaeev strict myself to the specific showing.

What I claim as new and useful, therefore,

In a gas burner and pilot therefor located near the burner, a gas cock connected to the burner for controlling the. supply of gas thereto, said gas cock comprising a body portion and a movable member with a bore therethroiigh, the body member having a pilot gas feeding bore connected to the pilot.

and a by-pass connecting the pilot bore with the gas supply side of the cock, the relative size and position of the bore in-the movable element and the pilot bore being such that the'supply of gas to the pilot is greatly increased just before and the time gas is supplied to tie'burner which supply. of gas to the pilot is decreased as the supply to the burner is increased through the movable element of the cock.

In testimony whereof I havehereunto set i my hands on this 18th day of March A. D. 1929.

7 IRVING M. AUSTINJR.

arrangement that gas pressure is also supplied to the pilot when the burner is turned low thereby guarding against accidental extinguishing of the gas under low pressure. The gas fixture 13 is provided with a pilot by-pass 27 which may be regulated by a regulating screw 28 as is shown in Figs. 3 and 5.

A gas injection nozzle 29 is supplied at the end of the gas fixture 13 and this nozzle is provided with a restricted passage 30 for supplying gas in suitable quantities to accomplish the Bunsen effectin the usual manner. The burner 10 may be supported in the usual way as by a rod 31 and it is understood that the principle and relationship of burner and my improved pilot is applicable wherever used 1Il COI1I1eCtlOI1 with gas plates or gas heaters for cooking, heating or for other purposes.

From the description and disclosure thus far iven it is apparent that my apparatus can be readily applied to the usual types of gas fixtures and that thesame is operable ilh ggir, 

